This subterranean labyrinth inhales three million bustling commuters every day. And every day, it breathes them all out again... except for one. Software millionaire Joe Tesla is set to ring the bell on Wall Street the morning his company goes public. On what should be the brightest day in his life, he is instead struck with severe agoraphobia. The sudden dread of the outside is so debilitating, he can't leave his hotel at Grand Central Terminal, except to go underground. Bad luck for Joe, because in the tunnels lurk corpses and murderers, an underground Victorian mansion and a mysterious bricked-up 1940s presidential train car. Joe and his service dog, Edison, find themselves pursued by villains and police alike, their only salvation now is to unearth the mystery that started it all, a deadly, contagious madness on the brink of escaping The World Beneath.

    All that trouble falls to background noise, however, when Wolf learns his brother has just committed suicide in northern Italy. Devastation and resentment of his sibling's selfish act is short-lived, because Wolf knows one thing is for certain: his brother would never kill himself. Or would he? A nagging suspicion there's more to the story is enough to pull Wolf from his volatile life, to Lecco, Italy--a picturesque city along the shores of Lake Como, where danger lies amid the ancient cobblestone alleys.With the aid of a beautiful Carabinieri agent, can Wolf piece together what really happened to his brother without suffering the same fate?